Results 51 to 60 of about 1,004,536 (238)

A phenomenological study of bottom-quark fragmentation in top-quark decay [PDF]

open access: yesThe European Physical Journal C, 2009
Top-quark physics is one of the main fields of investigation at the Tevatron accelerator and, ultimately, at the LHC. We perform a phenomenological analysis of ttbar events at hadron colliders, with a focus on observables relying on bottom-quark fragmentation in top-quark decay.
Corcella, Gennaro, Mescia, Federico
openaire   +2 more sources

Search for two Higgs bosons in final states containing two photons and two bottom quarks in proton-proton collisions at 8 TeV [PDF]

open access: yes, 2016
: A search is presented for the production of two Higgs bosons in final states containing two photons and two bottom quarks. Both resonant and nonresonant hypotheses are investigated.
Cms Collaboration
semanticscholar   +2 more sources

Diphoton production in association with two bottom jets [PDF]

open access: yes, 2017
We study the production of a photon pair in association with two bottom jets at the LHC. This process constitutes an important background to double Higgs production with the subsequent decay of the two Higgs bosons into a pair of photons and b-quarks ...
Faeh, Daniel, Greiner, Nicolas
core   +3 more sources

Differential decay rates of CP-even and CP-odd Higgs bosons to top and bottom quarks at NNLO QCD [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe consider the decay of a neutral Higgs boson of arbitrary CP nature to a massive quark antiquark pair at next-to-next-to-leading order in perturbative QCD. Our analysis is made at the differential level using the antenna subtraction framework.
W. Bernreuther, Long-Bin Chen, Z. Si
semanticscholar   +1 more source

Heavy quark effective theory computation of the mass of the bottom quark [PDF]

open access: yesJournal of High Energy Physics, 2007
We present a fully non-perturbative computation of the mass of the b-quark in the quenched approximation. Our strategy starts from the matching of HQET to QCD in a finite volume and finally relates the quark mass to the spin averaged mass of the Bs meson in HQET. All steps include the terms of order Lambda^2/Mb.
Michele Della Morte   +3 more
openaire   +5 more sources

The Experiment Road to the Heavier Quarks and Other Heavy Objects [PDF]

open access: yes, 2000
After a brief history of heavy quarks, I will discuss charm, bottom, and top quarks in turn. For each one, I discuss its first observation, and then what we have learned about production, hadronization, and decays - and what these have taught us about ...
Appel, Jeffrey A.
core   +3 more sources

Search for charged Higgs bosons decaying into top and bottom quarks at s=13\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{docume [PDF]

open access: yesJournal of High Energy Physics, 2018
A search for charged Higgs bosons heavier than the top quark and decaying via H± → tb is presented. The data analysed corresponds to 36.1 fb−1 of pp collisions at s=13\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage ...
M. Aaboud   +499 more
semanticscholar   +1 more source

2b or not 2b: on the rejection of g → b b ¯ $$ b\overline{b} $$ jets

open access: yesJournal of High Energy Physics, 2023
Motivated by new physics models which lead to final states containing a high multiplicity of bottom and top quarks, we develop a tagging strategy to suppress reducible and non-reducible multi-jet backgrounds. The idea takes advantage of the properties of
Beni Pazar, Enrico Lunghi
doaj   +1 more source

Bottomonium Continuous Production from Unequilibrium Bottom Quarks in Ultrarelativistic Heavy Ion Collisions [PDF]

open access: yes, 2017
We employ the Langevin equation and Wigner function to describe the bottom quark dynamical evolutions and their formation into a bound state in the expanding Quark Gluon Plasma (QGP).
Baoyi Chen, Jiaxing Zhao
semanticscholar   +1 more source

$t\bar{t}b\bar{b}$ hadroproduction with massive bottom quarks with PowHel [PDF]

open access: yes, 2017
The associated production of top-antitop-bottom-antibottom quarks is a relevant irreducible background for Higgs boson analyses in the top-antitop-Higgs production channel, with Higgs decaying into a bottom-antibottom quark pair.
Bevilacqua, G.   +2 more
core   +1 more source

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